JP6597804B2 - Power storage module - Google Patents

Description

  The technology disclosed in this specification relates to a power storage module.

  Conventionally, the thing of Unexamined-Japanese-Patent No. 2015-141878 is known as an electrical storage module. In this power storage module, a plurality of power storage units having power storage elements are fixed to a plurality of support members, a plurality of brackets, and a plurality of frames by a plurality of bolts.

JP, 2015-141878, A

  According to said structure, since there were many fixing | fixed places with a volt | bolt, there existed a problem that the fixing operation | work of an electrical storage unit was complicated. As a result, there has been a concern that the manufacturing efficiency of the power storage module is reduced.

  The technology disclosed in the present specification has been completed based on the above situation, and aims to improve the manufacturing efficiency of the power storage module.

The technology disclosed in the present specification is a power storage module, which includes a first case having a heat sink fin and a base wall, a first bolt insertion hole through which a bolt is inserted, and an opening. A power storage module that has a box shape, is stacked on the first case, and has a second bolt insertion hole through which the bolt is inserted, and a power storage unit stacked on the frame. The power storage unit has a threaded portion in which a screw hole into which the bolt is screwed is formed, and the bolt extends from the first case side to the first bolt insertion hole and the second bolt insertion hole. The frame and the first case are stacked in a state where the edge of the side wall of the frame and the base wall of the first case are in contact with each other. And said frame By opening is closed by the base wall of the first case, a gap is formed between the first case frame.

  According to the above configuration, the first case and the frame are inserted by inserting the bolt from the first bolt insertion hole side of the first case and screwing the bolt into the screw hole of the screwed portion of the power storage unit. And the power storage unit can be assembled together. Thereby, compared with the case where the 1st case, a flame | frame, and an electrical storage unit are each screwed, a screwing process can be reduced. Thereby, the manufacturing efficiency of an electrical storage module can be improved.

  The following aspects are preferred as embodiments of the technology disclosed in this specification.

  The power storage unit includes a mounting member that attaches the power storage unit to the first case and the frame, and the mounting member contacts the power storage unit from a side opposite to the frame side; and An extension part extending from the end of the contact part along the power storage unit toward the frame, and an end part of the extension part between the screwed part of the power storage unit and the frame And a fixing portion through which a third bolt insertion hole through which the bolt is inserted is formed. The bolt includes the first bolt insertion hole, the second bolt insertion hole, and the first bolt insertion hole. It is preferable to be screwed into the screw hole of the screwed portion in a state of being inserted through the 3-bolt insertion hole.

  According to said structure, a 1st case, a flame | frame, and an electrical storage unit can be reliably fixed with an attachment member.

  The attachment member is formed from the same plate-like member by bending the plate-like member, and the fixing portion is preferably formed at both ends of the attachment member.

  According to said structure, since the fixing | fixed part of an attachment member is distribute | arranged between the flame | frame and the electrical storage unit, it does not protrude outside from a flame | frame and an electrical storage unit. Thereby, the electrical storage module can be reduced in size as a whole.

  It is preferable that the frame is provided with a recess in which the screwed portion is accommodated, and a second bolt insertion hole in a back wall of the recess.

  According to said structure, a frame and an electrical storage unit can be easily positioned by accommodating a to-be-threaded part in a recessed part.

  Moreover, it is preferable that a second case that covers the power storage unit is further mounted in the frame.

According to said structure, an electrical storage unit can be protected from a contact with a foreign material.

  According to the technique disclosed in this specification, the manufacturing efficiency of the power storage module is improved.

The perspective view which shows the electrical storage module which concerns on Embodiment 1. Exploded perspective view showing power storage module Top view showing power storage module IV-IV line sectional view in FIG. VV line sectional view in FIG. The perspective view which shows an attachment member

<Embodiment 1>
A first embodiment of the technology disclosed in this specification will be described with reference to FIGS. 1 to 6. The power storage module 10 according to the present embodiment is arranged in a vehicle (not shown) and supplies electric power to an electronic component (not shown) or an electrical component (not shown) arranged in the vehicle. . In the following description, it is assumed that the Z direction is upward, the Y direction is front, and the X direction is right. Moreover, about several same members, a code | symbol may be attached | subjected only to one part member, and a code | symbol may be abbreviate | omitted about another member.

(Power storage module 10)
The power storage module 10 includes a power storage unit 11 having a power storage element (not shown), a frame 12 to which the power storage unit 11 is fixed, and a heat sink 13 (an example of a first case) on which the frame 12 is placed. .

(Heat sink 13)
The heat sink 13 is made of metal and includes a base wall 15 and a plurality of heat radiation fins 16 extending upward from the upper surface of the base wall 15. As the metal forming the heat sink 13, an arbitrary metal such as aluminum, an aluminum alloy, copper, a copper alloy, and stainless steel can be appropriately selected as necessary. In this embodiment, aluminum or an aluminum alloy is used.

  The heat sink 13 has a substantially rectangular shape when viewed from above. The plurality of heat radiation fins 16 formed on the upper surface of the base wall 15 extend in the left-right direction and are arranged side by side in the front-rear direction.

  As shown in FIG. 3, the left and right length dimensions of the fifth and sixth radiating fins 16 formed from the front, and the left and right lengths of the fifth and sixth radiating fins 16 formed from the rear. The dimension is shorter than the length dimension of the other radiation fin 16 in the left-right direction. In the upper surface of the base wall 15, the first bolt insertion hole 18 through which the bolt 17 is inserted is formed in the region where the heat dissipation fin 16 is not formed due to the short length of the heat dissipation fin 16 in the left-right direction. 15 is formed penetrating in the vertical direction. In the present embodiment, four first bolt insertion holes 18 are formed in the base wall 15.

(Frame 12)
As shown in FIGS. 4 and 5, the frame 12 is installed below the heat sink 13. The frame 12 is formed in a box shape that opens upward. The shape of the opening edge of the frame 12 is formed substantially the same as the outer shape of the base wall 15. Accordingly, the opening of the frame 12 is closed by attaching the frame 12 below the heat sink 13.

  A circuit component 40 is accommodated inside the frame 12 (see FIG. 4). The circuit structure 40 is configured by mounting an electronic component 42 on a circuit board 41. In the present embodiment, the circuit structure 40 is attached to the lower surface of the heat sink 13. The circuit structure 40 may be attached to the frame 12.

  The frame 12 is made of metal such as aluminum or aluminum alloy. The frame 12 has a column portion 19 extending in the vertical direction at a position below the first bolt insertion hole 18 of the heat sink 13. The upper end portion of the support column 19 is in contact with the lower surface of the base wall 15. A second bolt insertion hole 20 through which the bolt 17 is inserted is formed in the column portion 19 so as to penetrate in the vertical direction.

  The upper end edge of the side wall of the frame 12 and the upper end portion of the support column 19 are in contact with the lower surface of the base wall 15 from below.

On the lower surface of the frame 12, the periphery of the portion where the second bolt insertion hole 20 is opened is formed as a recess 21 by being depressed upward. The back wall 22 towards direction of depression of the recess 21, the second bolt insertion hole 20 is opening. The hole edge part of the recessed part 21 is formed in the square shape seeing from the downward direction.

(Power storage unit 11)
A power storage unit 11 is installed below the frame 12. The power storage unit 11 has a substantially rectangular parallelepiped shape, and stores a power storage element (not shown). On the upper surface of the power storage unit 11, a screwed portion 24 in which a screw hole 23 into which the bolt 17 is screwed is formed so as to protrude upward. The screwed portion 24 is formed at a position corresponding to the concave portion 21 of the frame 12. As a result, the screwed portion 24 is accommodated in the recess 21.

  The threaded portion 24 is formed following the shape of the recess 21. In other words, the screwed portion 24 has a quadrangular prism shape protruding upward from the upper wall of the power storage unit 11. A screw hole 23 into which the bolt 17 is screwed is formed on the upper surface of the screwed portion 24 in the vertical direction. The screw hole 23 is a bottomed hole.

(Cover 25)
Below the frame 12, a cover 25 (an example of a second case) that covers the power storage unit 11 attached to the frame 12 from below is attached. The cover 25 may be made of a synthetic resin or may be made of metal, and any material can be appropriately selected as necessary.

  The frame 12 and the cover 25 can be attached to each other by a known fixing means. For example, a lock receiving portion (not shown) formed on the cover 25 is elastically engaged with a lock protrusion (not shown) formed on the frame 12, so that the frame 12 and the cover 25 are assembled. Can be configured.

(Mounting member 26)
As shown in FIG. 6, the attachment member 26 is formed by pressing a metal plate material into a predetermined shape. The attachment member 26 has a shape obtained by bending a long and thin metal plate. The metal which comprises the attachment member 26 can select suitably arbitrary metals as needed, such as aluminum, aluminum alloy, copper, copper alloy, iron, iron alloy, stainless steel.

  As shown in FIG. 4, the attachment member 26 includes a contact portion 27 that contacts the lower surface of the power storage unit 11 from below, two extension portions 28 that extend upward from both ends of the contact portion 27, and an extension portion 28. And two fixing portions 29 bent inward in the left-right direction from the upper end portion. A third bolt insertion hole 30 through which the bolt 17 is inserted penetrates the fixing portion 29 in the vertical direction.

  The fixing portion 29 is inserted into the recess 21 of the frame 12 and attached to the frame 12 and the power storage unit 11 while being sandwiched between the back wall 22 of the recess 21 and the upper surface of the screwed portion 24. ing.

  The distance between the lower surface of the fixing portion 29 and the upper surface of the contact portion 27 is set to be the same or slightly smaller than the height dimension between the lower surface of the power storage unit 11 and the upper surface of the screwed portion 24. Thus, by attaching the attachment member 26 to the power storage unit 11, the power storage unit 11 is sandwiched from above and below by the contact portion 27 and the fixing portion 29 of the attachment member 26.

  A gap is formed between the heat sink 13 and the frame 12, and the circuit structure 40 is arranged in the gap.

(Assembly process of power storage module 10)
Next, an example of the assembly process of the power storage module 10 will be described. In addition, the assembly | attachment process of the electrical storage module 10 is not limited to the following description.

  The attachment member 26 is attached to the power storage unit 11 from the front or the rear. Specifically, the power storage unit 11 is fitted into the space surrounded by the contact portion 27, the extension portion 28, and the fixing portion 29 of the attachment member 26 from the front or the rear. Then, the fixing portion 29 comes into contact with the screwed portion 24 of the power storage unit 11 from above, and the contact portion 27 comes into contact with the lower surface of the power storage unit 11 from below. As a result, the power storage unit 11 is sandwiched between the attachment members 26.

  The frame 12 is assembled from above the power storage unit 11 to which the attachment member 26 is attached. At this time, the frame 12 is brought close to the power storage unit 11 from above so that the concave portion 21 formed on the lower surface of the frame 12 and the screwed portion 24 of the power storage unit 11 are aligned, and the screwed portion is inserted into the concave portion 21. 24 is accommodated.

Subsequently, the heat sink 13 is attached from above the frame 12. Specifically, the lower surface of the base wall 15 of the heat sink 13 is placed on the upper edge of the side wall of the frame 12 and the upper surface of the support column 19 of the frame 12. At this time, the second bolt insertion hole 20 formed in the upper surface of the support column 19 of the frame 12 and the first bolt insertion hole 18 formed in the base wall 15 of the heat sink 13 are assembled so as to be aligned.

  Subsequently, the bolt 17 is inserted into the first bolt insertion hole 18 from above. The bolts 17 are inserted in order from the top into the first bolt insertion hole 18 of the heat sink 13, the second bolt insertion hole 20 of the frame 12, and the third bolt insertion hole 30 of the attachment member 26, and then the screw hole of the power storage unit 11. 23. When the bolt 17 is screwed into the screw hole 23, the power storage unit 11, the mounting member 26, the frame 12, and the heat sink 13 are assembled together by being sandwiched between the head of the bolt 17 and the screwed portion 24. It is done. In this state, the contact portion 27 of the attachment member 26 is in contact with the lower surface of the power storage unit 11 from below, so that the attachment member 26 is prevented from coming off downward.

  Finally, the cover 25 is attached to the frame 12 and the power storage unit 11 is covered with the cover 25. Thereby, the electrical storage module 10 is completed.

(Operation and effect of the embodiment)
Then, the effect | action and effect of this embodiment are demonstrated. The power storage module 10 according to the present embodiment includes a heat sink 13 having a heat radiation fin 16 and a base wall 15 and having a first bolt insertion hole 18 through which the bolt 17 is inserted into the base wall 15. In addition, the power storage module 10 includes a frame 12 having a second bolt insertion hole 20 through which the bolt 17 is inserted, and a power storage unit 11 stacked on the frame 12, and the power storage unit 11 is screwed with the bolt 17. The bolt 17 is inserted into the first bolt insertion hole 18 and the second bolt insertion hole 20 from the heat sink 13 side and screwed into the screw hole 23. A gap 50 is formed between the heat sink 13 and the frame 12.

  According to the above configuration, the bolt 17 is inserted from the first bolt insertion hole 18 side of the heat sink 13 and the bolt 17 is screwed into the screw hole 23 of the screwed portion 24 of the power storage unit 11. 13, the frame 12, and the power storage unit 11 can be assembled together. Thereby, compared with the case where the heat sink 13, the flame | frame 12, and the electrical storage unit 11 are each screwed individually, a screwing process can be reduced. Thereby, the manufacturing efficiency of the electrical storage module 10 can be improved.

  Specifically, for example, when each member is screwed individually, one screwing step is required between the heat sink 13 and the frame 12, and two more between the frame 12 and the power storage unit 11. An eye screwing step is required, and a third screwing step is required between the power storage unit 11 and the heat sink 13.

  On the other hand, according to the present embodiment, the heat sink 13, the frame 12, and the power storage unit 11 can be fixed in one screwing step. There is an effect of improving the production efficiency.

  Further, according to the present embodiment, when the power storage module 10 is disassembled and the power storage unit 11 is recovered, the power storage unit 11 can be easily separated from the power storage module 10 by removing the bolts 17 from the heat sink 13 side. it can.

  More specifically, for example, when each member is screwed individually, even if the bolt 17 that fixes the heat sink 13 and the frame 12 is removed, the screw between the frame 12 and the power storage unit 11 is still screwed. Has been. Therefore, even if the bolt 17 that fixes the frame 12 and the power storage unit 11 is removed, the heat sink 13 and the power storage unit 11 are still screwed. After all, when each member is screwed individually, it is impossible to separate the power storage unit 11 from the power storage module 10 unless all bolts 17 are removed.

  On the other hand, according to the present embodiment, the power storage unit 11 can be separated from the power storage module 10 by a simple method of removing the bolt 17 exposed from the upper surface of the heat sink 13.

  Further, according to the present embodiment, the power storage unit 11 includes the mounting member 26 that attaches the heat storage unit 11 to the heat sink 13 and the frame 12. The mounting member 26 is opposite to the frame 12 side with respect to the power storage unit 11. A contact portion 27 that contacts from the side, an extension portion 28 that extends from the end portion of the contact portion 27 along the power storage unit 11 toward the frame 12, and a screwed portion of the power storage unit 11 from the end portion of the extension portion 28. And a fixing portion 29 having a shape bent between the joint portion 24 and the frame 12 and having a third bolt insertion hole 30 inserted therethrough. The bolt 17 is inserted through the first bolt. In a state of being inserted into the hole 18, the second bolt insertion hole 20, and the third bolt insertion hole 30, it is screwed into the screw hole 23 of the screwed portion 24.

  According to said structure, the heat sink 13, the flame | frame 12, and the electrical storage unit 11 can be fixed reliably by the attachment member 26. FIG.

  Further, according to the present embodiment, the attachment member 26 is formed from the same plate-like member by bending the plate-like member, and the fixing portions 29 are formed at both ends of the attachment member 26.

  According to the above configuration, the fixing portion 29 of the attachment member 26 is arranged between the frame 12 and the power storage unit 11, so that it does not protrude outward from the frame 12 and the power storage unit 11. Yes. Thereby, the electrical storage module 10 can be reduced in size as a whole.

  Further, according to the present embodiment, the frame 12 is provided with the concave portion 21 in which the screwed portion 24 is accommodated, and the second bolt insertion hole 20 in the back wall 22 of the concave portion 21.

  According to said structure, the frame 12 and the electrical storage unit 11 can be positioned easily by accommodating the to-be-threaded part 24 in the recessed part 21. FIG.

  Further, according to the present embodiment, the frame 12 is further provided with the cover 25 that houses the circuit structure 40 and covers the power storage unit 11.

  According to said structure, the electrical storage unit 11 can be protected from a contact with a foreign material with the cover 25. FIG.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and for example, the following embodiments are also included in the technical scope of the technology disclosed in the present specification.

  (1) The screwed portion 24 is depressed, and a convex portion that protrudes from the frame 12 toward the screwed portion 24 is formed, and the convex portion is accommodated in the screwed portion 24. The second bolt insertion hole 20 may be formed at the tip of the convex portion.

  (2) Although the fixing portion 29 is formed at both ends of the attachment member 26, the present invention is not limited to this, and the fixing portion 29 may be formed only at one end.

  (3) Although the attachment member 26 has a long and narrow plate shape, the attachment member 26 is not limited to this and may have an arbitrary shape.

  (4) The power storage unit 11 may include a plurality of power storage units 11, and the attachment member 26 may be provided corresponding to each of the plurality of power storage units 11.

  (5) In the present embodiment, the first case is the metal heat sink 13, but is not limited thereto, and may be made of a synthetic resin.

10: Power storage module 11: Power storage unit 12: Frame 13: Heat sink (first case)
15: Base wall 16: Radiation fin 17: Bolt 18: First bolt insertion hole 20: Second bolt insertion hole 21: Recess 22: Back wall 23: Screw hole 24: Screwed portion 25: Cover (second case)
26: Mounting member 27: Abutting portion 28: Extension portion 29: Fixing portion 30: Third bolt insertion hole 40: Circuit component 50: Clearance

Claims (5)

A first case having a heat dissipating fin and a base wall, and having a first bolt insertion hole through which the bolt is inserted;
And a box shape having an opening, while being stacked on the first case, a frame having a second bolt insertion hole into which the bolt is inserted,
A power storage module having a power storage unit stacked on the frame,
The power storage unit has a screwed portion in which a screw hole into which the bolt is screwed is formed,
The bolt is inserted into the first bolt insertion hole and the second bolt insertion hole from the first case side and screwed into the screw hole,
With the edge of the side wall of the frame and the base wall of the first case in contact, the frame and the first case are laminated,
The power storage module, wherein a gap is formed between the first case and the frame by closing an opening of the frame by the base wall of the first case. The power storage unit has a mounting member for attaching the power storage unit to the first case and the frame,
The mounting member is
A contact portion that contacts the power storage unit from the side opposite to the frame side;
An extending part extending from the end of the contact part along the power storage unit toward the frame;
A fixing portion having a shape bent from an end portion of the extension portion toward the screwed portion of the power storage unit and the frame and having a third bolt insertion hole through which the bolt is inserted; With
The bolt is screwed into the screw hole of the screwed portion in a state of being inserted into the first bolt insertion hole, the second bolt insertion hole, and the third bolt insertion hole. 2. The power storage module according to 1.   The power storage module according to claim 2, wherein the attachment member is formed of the same plate-like member by bending a plate-like member, and the fixing portion is formed at both ends of the attachment member.   The said frame is provided with the recessed part in which the said to-be-threaded part is accommodated, and the said 2nd volt | bolt penetration hole in the back wall of the said recessed part, It is any one of Claims 1-3. The electricity storage module described.   5. The power storage module according to claim 1, wherein a circuit configuration body is accommodated in the frame, and a second case that covers the power storage unit is further attached.

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